2170523 has 2 divisors, whose sum is σ = 2170524. Its totient is φ = 2170522.

The previous prime is 2170513. The next prime is 2170529. The reversal of 2170523 is 3250712.

2170523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2170523 - 2¹⁰ = 2169499 is a prime.

It is a super-2 number, since 2×2170523² = 9422340187058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2170495 and 2170504.

It is not a weakly prime, because it can be changed into another prime (2170529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085261 + 1085262.

It is an arithmetic number, because the mean of its divisors is an integer number (1085262).

2^2170523 is an apocalyptic number.

2170523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170523 is an equidigital number, since it uses as much as digits as its factorization.

2170523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2170523 is about 1473.2694933379. The cubic root of 2170523 is about 129.4756591750.

It can be divided in two parts, 217052 and 3, that multiplied together give a palindrome (651156).

The spelling of 2170523 in words is "two million, one hundred seventy thousand, five hundred twenty-three".